biology chapter 22

QUESTIONS-Chapter 22

1. Explain in your own words three phases of gas exchange that takes place in animals.

2. Using a flow chart; trace the blood flow to the heart and lungs.

3. What part of the lung does gas exchange occur?

4. Why are the walls (valves) of the left side of the heart thicker?

5. What is hemoglobin? Explain its function.

6. Using a flow chart, explain how CO2 is carried in the blood.

7. What is the significance of carbonic acid.

8. What is the percentage of CO2 that is diffused into the Red Blood Cells.

9. What is the percentage of dissolved CO2 in the plasma?

10. Where is carbonic acid converted back into CO2 and water?

11. What reaction prevails in red blood cells traveling through pulmonary capillaries?

12. Blood returning to the mammalian heart in a pulmonary vein drains first into _.

Due at the end of the hour
Place answer onto separate sheet of paper.
Use complete sentences.